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    The Largest CRE Database in the US with Over 1 Million Listings
    Property profile & analytics

    645 Walnut St Boulder, CO 80302-5031

    • Office buildings
    • 1,932 SF
    • 0.08 lot acres
    OFF-MARKET
    Last Sale
    Oct 26, 2021
    $1,450,000
    Value Estimations
    $1,460,000
    Show details
    Cap Rate Potential
    Location Intelligence
    Property ID
    US13-1017182
    The Realmo ID is a unique identifier assigned to every property, incorporating country codes and precise geo-coordinates for 300x300-foot land blocks. It enables standardized data collection and seamless integration of disparate sources such as ownership, tax, title data and physical specifications. By aggregating current and historical records, the Realmo ID powers advanced analytics and delivers deep, verifiable insights for real estate professionals.

    Current Use by Public Records

    • Callipari Law / Legal Services
    • SQFTx / Real Estate Agency

    Property Details for 645 Walnut St

    Year built
    1910
    Construction
    BRICK
    Lot size
    0.08 lot acres
    Property size
    1,932 SF
    Zone code
    2121
    Property type
    Office buildings
    APN
    1461-25-4-42-011
    APU
    146125442011

    Value Estimations

    based on Realmo’s proprietary methodology

    • AI approach

      Method
      Estimation
      Statistic approach
      $1,555,000
      ML approach
      $1,605,000

    • Comparable approach

      Method
      Estimation
      Statistic Estimate
      $1,232,000
      Market price range: $649k - $1.71M

    • Alternative Use

      Use
      Estimation
      OFFICE BUILDING
      $1,070,000
      Current use
      COMMERCIAL (GENERAL)
      $1,445,000
      Change: +35% Conversion: Easy
      AUTO REPAIR, GARAGE
      $900,000
      Change: -16% Conversion: Difficult

    Get a detailed, property-specific valuation — fast and free

    Location Insight

    • Map
    • Local Demand
    City
    Boulder
    County
    Boulder
    State
    Colorado
    Longitude
    -105.286
    Latitude
    40.0157
    CBSA code
    14500
    CBSA name
    BOULDER, CO METROPOLITAN STATISTICAL AREA

    Property Tax & Assessments

    Tax date
    Tax Amount
    Assessed Land Value
    Assessed Improvement Value
    Total Assessed Value
    Applied Tax Rate
    Land Market Value
    Improvement Market Value
    Total Market Value
    2023
    $33,158
    $264,046
    $128,284
    $392,330
    -
    $946,400
    $459,800
    $1,406,200

    Comparable in this City

    • Value Estimation
      $30,465,000
      187,800 SF

      1800 Broadway

      OFFICE BUILDING • 187,800 SF
      1800 Broadway, Boulder, CO 80302-5234
      View Details
    • Value Estimation
      $3,155,000
      19,000 SF

      1111 Spruce St

      OFFICE BUILDING • 19,000 SF
      1111 Spruce St, Boulder, CO 80302-4001
      View Details
    • Value Estimation
      $4,540,000
      33,674 SF

      1470 Walnut St

      OFFICE BUILDING • 33,674 SF
      1470 Walnut St, Boulder, CO 80302-5333
      View Details
    • Value Estimation
      $835,000
      4,570 SF

      225 Cyn Blvd

      OFFICE BUILDING • 4,570 SF
      225 Cyn Blvd, Boulder, CO 80302-4920
      View Details
    • Value Estimation
      $2,130,000
      12,880 SF

      1820 Folsom St

      OFFICE BUILDING • 12,880 SF
      1820 Folsom St, Boulder, CO 80302-5703
      View Details
    • Value Estimation
      $680,000
      4,369 SF

      2336 Pearl St

      OFFICE BUILDING • 4,369 SF
      2336 Pearl St, Boulder, CO 80302-4631
      View Details

    Similar Nearby for Sale

    • New
      $4,800,000
      14,466 SF

      Renovated Office Building with Courtyard

      Fully leased, renovated office building near downtown Boulder with courtyard.
      207 Canyon Blvd, Boulder, CO 80302
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    • $4,499,640
      338 SF

      Boulder Retail & Office Building

      Classic building with exposed brick, wood timbers, and high ceilings.
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    • $749,000

      Downtown Boulder Office Condo

      Two-story office condo in downtown Boulder near Pearl Street.
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    • $400,000
      734 SF

      North Boulder Office Space

      Office space for sale in North Boulder, 734 square feet.
      1530 Lee Hill Dr, Boulder, CO 80302
      View Details
    • Contact for pricing
      4,948 SF

      Downtown Boulder Office Penthouse Suite

      4,948 SF office suite in Downtown Boulder.
      1002 Walnut St, Boulder, CO 80302
      View Details
    • $625,000
      1,110 SF

      Bright Office Condo with Amenities

      West-facing office condo with parking and extensive building amenities.
      2930 Broadway, Boulder, CO 80302
      View Details

    Similar Nearby for Lease

    • Contact for pricing
      4,045 SF

      Downtown Boulder Creative Office Space

      Historic building, prime location, flexible suites.
      1105 Spruce St, Boulder, CO 80302
      View Details
    • $15 SF/Yr
      3,824 SF

      Canyon Blvd Creative Office Space

      Modern Office Suite, Stunning Views, Boulder
      207 Canyon Blvd, Boulder, CO 80302
      View Details
    • $1.00 SF/Yr
      7,355 SF

      Prime Pearl Street Office Space

      Executive Suites, 4,171 sq ft Available
      1615 Pearl St, Boulder, CO 80302
      View Details
    • $24 SF/Yr
      7,758 SF

      Downtown Boulder Office/Retail Gem

      Classic Boulder building, lease or sale. Prime location, ample parking.
      1735-1737 15Th St, Boulder, CO 80302
      View Details
    • $26 SF/Yr
      76,800 SF

      WaterStreet Plaza: Office Space for Lease

      Prime Canyon Blvd Office Building, Abundant Parking
      2425-2595 Canyon Blvd, Boulder, CO 80302
      View Details
    • $850 /Mo
      368 SF

      Downtown Boulder Office Suite

      Office suite in downtown Boulder with common waiting area.
      1916-1922 13Th St, Boulder, CO 80302
      View Details
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    645 Walnut St
    Boulder, CO 80302-5031
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    Realmo Value Estimations

    Realmo estimates a property’s market value using a proprietary methodology that incorporates public data and user-submitted information. This cumulative value is generated by integrating a variety of conventional and innovative methods. 

    Disclaimer

    These figures are not official appraisals and should not be used as a substitute for a valuation performed by a licensed appraiser.
    Actual market value may differ due to factors not captured in the data. Estimates are offered for informational purposes only, and users should conduct independent research before making financial or investment decisions.
    By using this feature, you acknowledge that Realmo is not responsible for actions taken based on these estimates.

    AI approach

    Realmo AI Method estimates property value using machine learning models trained on millions of comparable listings, transactions, and market signals. It analyzes property features, location intelligence data, and current market dynamics to predict the most probable market value in real time.

    Realmo CapRate Calculation

    Realmo calculates the Capitalization Rate (Cap Rate) to help estimate a property's potential return on investment. The Cap Rate is a fundamental metric in commercial real estate that measures the relationship between a property's net operating income and its market value.

    How We Calculate Cap Rate

    Cap Rate Formula:
    Cap Rate (%) = (Net Operating Income / Property Value) × 100

    Net Operating Income (NOI) Formula:
    NOI = Area × Lease Rate × (1 - Vacancy Rate) × (1 - Operating Expense Ratio)

    Components

    Net Operating Income (NOI) represents the annual income a property generates after operating expenses:

    • Area: Building square footage from property records
    • Lease Rate: Annual $/sqft based on market data for the property type and geographic location
    • Vacancy Rate: Percentage of unoccupied space based on market data for the property type and location
    • Operating Expense Ratio: Operating costs as a percentage of income, varies by property type

    Property Value is derived from:

    • Recent sale price (if available)
    • Statistical models using comparable sales
    • AI-powered valuation estimates

    Example Calculation

    For a 100,000 sqft Office Building:

    • Lease Rate: $25.00/sqft/year (market data for Office in this area)
    • Vacancy Rate: 8% (market data for Office in this area)
    • Operating Expense Ratio: 35% (typical for Office properties)
    • Property Value: $15,000,000

    Step 1: Calculate NOI

    NOI = 100,000 × $25.00 × (1 - 0.08) × (1 - 0.35)
    NOI = 100,000 × $25.00 × 0.92 × 0.65
    NOI = $1,495,000/year

    Step 2: Calculate Cap Rate

    Cap Rate = ($1,495,000 / $15,000,000) × 100
    Cap Rate = 9.97%

    Property Type Considerations

    Net Operating Income calculations vary by property type due to different operating expense ratios:

    • Office: Higher expenses (30-40%) for HVAC, utilities, maintenance
    • Retail: Moderate expenses (25-35%) for common area maintenance
    • Industrial/Warehouse: Lower expenses (15-25%) for minimal tenant services
    • Multifamily: Moderate expenses (35-45%) including property management
    • Self-Storage: Lower expenses (25-35%) due to minimal maintenance

    Market lease rates and vacancy rates are specific to each property type and geographic location, reflecting local market conditions.

    Disclaimer

    These calculations are estimates for informational purposes only and should not be used as a substitute for professional financial analysis or appraisal.

    • Cap Rate calculations depend on market data that may change over time
    • Actual operating expenses, lease rates, and vacancy rates may differ from market averages
    • Individual property conditions, lease terms, and tenant quality significantly impact actual NOI
    • Property value estimates are approximations and not official appraisals
    • Cap rates vary widely by market, property condition, and investment risk profile

    Professional Guidance Recommended: Before making any investment or financial decisions, consult with licensed appraisers, commercial real estate brokers, and financial advisors who can evaluate your specific property and circumstances.
    By using this feature, you acknowledge that Realmo is not responsible for investment decisions or actions taken based on these estimates.

    Cap approach

    Capitalization Method calculates value based on estimated net operating income (NOI) and applying a market-based capitalization rate (cap rate), we estimate what a typical investor might be willing to pay for it.

    Comparable approach

    Comparable estimate is based on recent sales of similar nearby properties, adjusted for factors like size, condition, and location.

    Relative

    Relative property class coefficient uses factors that account for typical price differences between various asset types (e.g., retail vs. industrial) to provide a more accurate market-aligned estimate.

    Geo

    Comparable Sales Method, enhanced by Geo coefficients — location-based adjustment factors that reflect differences in price levels across neighborhoods, cities, or regions ensuring a more accurate, market-sensitive valuation.

    Stat Estimate

    This method estimates value based on actual market adjusted recent (~5 years) sales of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all similar sales ($/sqft) are above this value
    • Range-to: 75% of all similar sales ($/sqft) are below this value
    AI Estimate

    This method estimates value based on AI market estimation of comparable properties around by location and property type.

    • Ranges - area data calculated by industry standard IQR Outlier Removal Method
    • Range-from: 75% of all estimations ($/sqft) are above this value
    • Range-to: 75% of all estimations ($/sqft) are below this value
    Alternative use

    Estimate considers the property’s potential value if used for a different purpose-based on zoning, demand, and market feasibility.

    More about this property
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